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Equipment for treating organic wastewater through joint of electrolyzation and oxidant

A technology for organic wastewater and combined treatment, which is applied in the fields of water/sewage multi-stage treatment, water/sludge/sewage treatment, water pollutants, etc. It can solve the problems of low space-time efficiency, achieve high space-time efficiency and improve biochemical treatment efficiency. , the effect of saving electrodes

Inactive Publication Date: 2012-03-21
刘伟
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide an electrolysis-oxidant combined treatment equipment for organic waste water to completely oxidize and degrade the organic matter in the waste water, avoid the problem of low space-time efficiency of common electrolysis equipment, and at the same time achieve a significant increase in the rate of oxidative degradation

Method used

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  • Equipment for treating organic wastewater through joint of electrolyzation and oxidant
  • Equipment for treating organic wastewater through joint of electrolyzation and oxidant

Examples

Experimental program
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Effect test

Embodiment 1

[0020] Equipment construction and operation. Such as figure 1 The electrolysis-oxidant joint treatment equipment for organic wastewater shown is composed of an electrolytic cell, a circulation system and a storage tank. The storage tank is provided with a water inlet and a drainage port. One end of the electrolytic cell is connected to the storage tank through the circulation system, and the other end is directly connected to the storage tank. The tanks are connected, the circulation system includes a circulation pump and pipelines, 0.1mol / L hypochlorous acid is added as an oxidant in the electrolytic cell and a BDD electrode is installed, and the electrode is connected to a direct current with a voltage of 12.0V and a current of 4.0A. During operation, the wastewater first enters the storage tank, and then flows into the electrolytic cell from one end of the electrolytic cell through the circulating pump, and then connects the current, and electrolysis and oxidation decomposi...

Embodiment 2

[0022] Utilize the equipment of Example 1 and adopt BDD electrode and hypochlorous acid to oxidize and degrade landfill leachate. The COD of the leachate reaches 3480mg / L, and the concentration of ammonia nitrogen reaches 4000mg / L. Under the conditions of voltage 12.0V and current 4.0A, hypochlorous acid with a concentration of 0.1mol / L is added, electrolyzed for 5 hours, COD drops to 85mg / L, ammonia nitrogen Reducing to 50 mg / L, the degradation effect is remarkable, and it has a good decolorization effect. COD and ammonia nitrogen did not decrease significantly when only hypochlorous acid was added. However, when electrolysis and hypochlorous acid were combined, the degradation rate of COD and ammonia nitrogen was about 1.5 times faster.

Embodiment 3

[0024] Utilize the equipment of embodiment 1 and adopt BDD electrode and hypochlorous acid to electrolyze phenol wastewater. Phenol wastewater COD=2240mg / L, continuous electrolysis under the conditions of applied voltage 12.0V, current 4.0A, adding hypochlorous acid with a concentration of 0.1mol / L, after 5 hours electrolysis COD decreased to 35mg / L. Simply adding hypochlorous acid has no degradation, but when electrolysis and hypochlorous acid are combined, the rate is significantly improved, which is nearly 2 times faster than that of pure electrolysis.

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Abstract

The invention discloses equipment for treating organic wastewater through the joint of electrolyzation and oxidants. The equipment comprises an electrolysis bath, a circulating system and a storage tank, wherein a water inlet and a drainage outlet are formed on the storage tank, one end of the electrolysis bath is connected with the storage tank through the circulating system, the other end of the electrolysis bath is directly connected with the storage tank, the circulating system comprises a circulating pump and a pipeline, and the equipment is characterized in that the oxidants are added into the electrolysis bath, an electrode is arranged in the electrolysis bath, and the electrode is connected with direct current; during operation, waste water firstly enters into the storage tank and then flows into the electrolysis bath from one end of the electrolysis bath through the circulating pump, in case of making current, electrolytic reaction and oxygenolysis reaction occur in the electrolysis bath, waste water flowing through the electrolysis bath flows out from the other end of the electrolysis bath and then returns to the storage tank; and the process is repeated until organic matters in waste water are degraded to meet the required level.

Description

technical field [0001] The invention belongs to the field of environmental protection, and in particular relates to an electrolytic oxidation strengthening device for wastewater treatment. Background technique [0002] my country is a big producer of chemical, food, paper, leather, electroplating and other industries, and various production enterprises discharge a large amount of organic wastewater every day. Especially in the sewage discharged from the food industry (food, brewing, sugar), light industry (leather, paper), textile industry (textile, printing and dyeing), petrochemical industry (petroleum smelting, fine chemicals, medicine, pesticides), etc. A large number of toxic and non-biodegradable organic pollutants are difficult to deal with by traditional water treatment technologies due to the diversity, complexity and refractoriness of their components. Although membrane separation technology, ozone oxidation and photocatalytic oxidation developed in recent years c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/06C02F101/30
Inventor 刘伟
Owner 刘伟
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